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A Supreme Court Case This Week Could Change US Digital Privacy Standards

On November 29th, the U.S. Supreme Court will hear oral arguments in Carpenter v. US, a case essentially asking whether or not authorities need a warrant based on probable cause and signed by a judge to see your cellphone location data. For now, they do not. Given the fact that about 95% of Americans have cellphones, this case has major implications. Quartz reports: Mobile-service providers collect "cell site location information" (CSLI) for all phones, ostensibly to use for things like improving their networks. The U.S. government considers these data "routinely collected business records" rather than private information. That means it can demand the records without proving probable cause. That's what happened in the criminal case of Timothy Carpenter, accused of a series of Detroit, Michigan robberies. At Carpenter's trial, prosecutors presented evidence collected by private companies, obtained by the law without probable cause. They used 127 days-worth of cellphone-location data, amounting to almost 13,000 data points, to tell a circumstantial story of Carpenter comings and goings.

In its brief to the high court, filed in September, the justice department argued that when Carpenter signed onto his cell-phone provider's service, he agreed that his call records weren't private information belonging to him, but rather business records belonging to the company. Therefore, he should have "no reasonable expectation of privacy" when it comes to these records, government attorneys wrote. Carpenter argues that the location evidence was obtained illegally. The Sixth Circuit Court of Appeals denied that claim last year, basing their decision on Supreme Court cases from the 1970s: Smith v. Maryland and US v. Miller . The appeals court concluded that, under what's called the "third-party doctrine," Americans don't have a reasonable expectation of privacy in things like check deposit slips, similar banking records, and dialed telephone numbers.

4 of 74 comments (clear)

  1. What should be private? by axlash · · Score: 4, Interesting

    A good question to ask is - what is it reasonable to expect to be private?

    Here are some scenarios that most people would agree would qualify as an invasion of privacy:
    - If what you did on your personal property behind closed doors was made public;
    - If you gave personal information to someone, and they said that they would keep it secret, but they then disclosed it to someone else.

    Here are some scenarios that would *not* qualify as invasion of privacy:
    - If you did something on property that was not yours, and it was made public;

    I am not sure of a situation where you give personal information to someone, and they make it public after making no guarantees to you that they would keep such information secret. Are you foolish for giving the information without such guarantees, or should you expect that because the information is personal, you should automatically assume it should be kept secret? Why should you have such an expectation?

    --
    Deal with reality - the world as it is - rather than ideality - the world as you would like it to be.
    1. Re:What should be private? by sinij · · Score: 2, Interesting

      Your honor, obviously axlash is premeditated and conspired to commit crime, as he refused to carry his smartphone with him on the day of the event.

    2. Re:What should be private? by Anonymous Coward · · Score: 2, Interesting

      A good question to ask is - what is it reasonable to expect to be private?

      That's actually quite simple
      Anything that's not accessible to other non-law-enforcement citizens. I can observe anyone I want in public. I can get their public data.
      But I can't have their info from other companies, because they'll tell me to go away.

  2. slippery by supernova87a · · Score: 1, Interesting

    Is it private information if you walk around shouting your name wherever you go? Or showing your face? Is it not just a short leap from that to your cell phone doing that for you?